Same day delivery on Most orders

Those last minute deadlines delivered from stock

Technical support & Pre-sale advice

Unsure on what exactly you need? We'll help!

We represent only quality brands

So you can have confidence in what you're buying!


VEGAPULS 31 Compact radar sensor

The perfect sensor for non-contact level monitoring of liquids and bulk solids in straightforward applications is VEGAPULS 31. It is especially well suited for use in water treatment, storage tanks with acids, lyes, and additives in all industrial settings, or for determining the level of plastic tanks from the outside via the tank wall. The sensors are utilised with bulk solids in open containers or small bulk solids silos.

  • badge1 Original Products
  • badge2 Warranty Against Defects
  • badge3 Returns & Refunds Policy
  • badge4 Ships Worldwide
  • badge5 Dedicate Support
  • Benefits
  • Function
  • Technical Data
  • Materials
  • Housing versions
  • Electronics versions
  • Approvals
  • Adjustment
  • Electrical connection
  • Dimensions
  • Mounting accessories
  • Maintenance-free operation due to non-contact 80 GHz radar tech- nology
  • Exact measurement results independent of medium properties and process conditions
  • Local display for easy checking of the Maintenance-free opera- tion due to non-contact measuring principle

The sensor emits a continuous radar signal through the antenna. The emitted signal is reflected by the medium and received as an echo by the antenna.

The frequency difference between the emitted and received signal is proportional to the distance and depends on the filling height. The determined filling height is converted into a respective output signal and output as measured value.

Measuring range up to

15 m (49.21 ft)


≤ 2 mm

Beam angle

Measuring frequency

W-band (80 GHz technology)

Output signal

4 … 20 mA/HART

Process fitting

Thread G1½, 1½ NPT, R1½

Process pressure

-1 … +3 bar (-100 … +300 kPa/-

14.5 … +43.51 psig)

Process temperature

-40 … +80 °C (-40 … +176 °F)

Bluetooth standard

Bluetooth 5.0

Bluetooth range

typically 25 m (82 ft)

Operating voltage

12 … 35 V DC

Protection rating

IP66/IP67 acc. to IEC 60529, Type 4X acc. to UL 50

The wetted parts of the instrument are made of PVDF. The process seal is made of FKM

The housing is made of PBT plastic and is available in protection rating IP66/IP67.

The instrument is available in the 4 … 20 mA/HART electronics version.

Worldwide approvals are available for VEGA instruments, e.g. for use in hazardous areas, on ships or in hygienic applications.

For approved devices (e.g. with Ex approval) the technical data in the respective safety instructions are applicable.

On-site adjustment of the device is carried out via the integrated display and adjustment unit.

Adjustment via the signal cable

The adjustment of the instrument is carried out via the interface adapter VEGACONNECT and a PC with the adjustment software PACTware and corresponding DTM.

Wireless adjustment via Bluetooth

The Bluetooth version of the device enables wireless connection to smartphones/tablets (iOS/Android) or Windows PCs.

Wireless connection to standard operating devices

Operation is via a free app from the " Apple App Store", the " Goog- le Play Store" or the " Baidu Store". Alternatively, adjustment can also be carried out via PACTware/DTM and a Windows PC.

Adjustment via PACTware or app
Adjustment via remote systems
Further adjustment options are possible via a HART Communicator as
well as manufacturer-specific programs such as AMS™ or PDM.

  • Voltage supply, signal output
  • Plug connector for the display and adjustment module or interface adapter

  • Thread G1½
  • Thread 1½ NPT
  • Thread R1½

For the VEGAPULS 31 the suitable mounting accessories for ceiling or wall mounting is available.

Mounting strap with adjustable sensor holder for sensors with lateral cable outlet - Wall mounting (example)

How can we help you?